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SAE 8620 Annealed Forged Alloy Steel Round Bar with Polished Surface for High Hardenability

Minimum Order Quantity	1 Ton
Price	US $850-1,350 / Ton

Product Details

Diameter	6-630mm	Material	Alloy Steel
Surface Treatment	Polished	Carbon Content	0.17-0.23%
Silicon Content	0.17-0.37%	Manganese Content	0.6-0.95%
Chromium Content	0.4-0.7%	Molybdenum Content	0.20-0.30%
Tensile Strength	≥980 MPa	Yield Strength	≥785 MPa
Elongation	≥9%	Reduction Area	≥40%
Impact Energy	≥47 J	Quenching Temp	850°C
Tempering Temp	200°C
Highlight	Annealed Alloy Steel Round Bar , Forged Steel Round Bar , Polished SAE 8620 Round Bar

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Product Description

SAE8620H Alloy Steel Round Bar

SAE 8620 is an alloy construction steel with excellent hardenability, good weldability, and superior machinability. This low carbon nickel chromium molybdenum alloy offers outstanding carburized properties, formability, and cold strain plasticity.

Key Features

Excellent machinability performance
Superior cold strain plasticity
Good weldability characteristics
High hardenability without fragility after tempering

International Standards

Chinese	American	German	Japanese
GB 20CrNiMo	SAE 8620	DIN 1.6523	/

Chemical Composition

Element	Content (%)
Carbon (C)	0.17-0.23
Silicon (Si)	0.17-0.37
Manganese (Mn)	0.6-0.95
Phosphorus (P)	≤0.035
Sulfur (S)	≤0.035
Chromium (Cr)	0.4-0.7
Molybdenum (Mo)	0.20-0.30
Copper (Cu)	≤0.30

Mechanical Properties

Heat Treatment:
Quenching Temperature: 850°C (oil cooled)
Tempering: 200°C (air cooled)

Property	Value
Tensile Strength (σb)	≥980 MPa (100 kgf/mm²)
Yield Strength (σs)	≥785 MPa (80 kgf/mm²)
Elongation (δ5)	≥9%
Reduction of Area (ψ)	≥40%
Impact Energy (Akv)	≥47 J

Applications

Widely used in transmission systems, tractor motors, and small to medium automotive applications. Ideal for high-class carburization and cyanide carburizing parts including oil drilling equipment, mining claws, and cones. Commonly specified for carburized gears, pinions, shafts, bearings, piston rings, ring gears, and crankshafts.

Available Sizes

Round Bar Diameter: 12-380mm
Available Forms: Round bars, flat bars, plates, and blocks
Conditions: Pre-hardened, hot rolled, annealed, quenched and tempered
Surface Finishes: Black, pre-machined, grinding, and polish

Quality Assurance

Government-Certified Steel Mills

We source materials exclusively from certified steel manufacturers to ensure consistent quality and reliability in all our steel products.

ISO 9001 Certified

Our integrated quality management system is continuously improved and regularly audited to meet international standards.

Reliable Delivery

We prioritize timely delivery for all orders, ensuring your materials arrive when you need them.

Value-Added Services